Home / 80,332.29-120,504.69-21,167.28

Finding the Fourth Proportional to 80,332.29, 120,504.69 and 21,167.28

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Solution

The fourth proportional to 80,332.29, 120,504.69 and 21,167.28 is: 31,752.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,332.29 : 120,504.69 = 21,167.28 : x
  2. Step 2: Convert to fraction form
    80,332.29/120,504.69 = 21,167.28/x
  3. Step 3: Cross multiply
    80,332.29x = 120,504.69 × 21,167.28
  4. Step 4: Simplify right side
    80,332.29x = 2,550,756,514.54
  5. Step 5: Solve for x
    x = 2,550,756,514.54/80,332.29
  6. Step 6: Final answer
    x = 31,752.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.